EMC Effect in Nuclear String Model

Abstract

CLAS Collaboration has published an interesting work relating to EMC effect. The conclusion of the research group is that the formation of correlated nucleon pairs leads to the observed surprisigly strong modification of quark structure functions inside nucleon. The TGD based proposal based on nuclear string model is somewhat different. Formation of di-nucleons would occur as the nuclear flux tube touches itself. This implies a de-localization of quark color to the volume of di-nucleon formed by color confinement. Di-nucleons would consist of 3 di-quarks forming anti-color triplets and also meson-like quark pair is needed. The longitudinal momenta of quarks inside di-quark would be same and this constraint would reduce degrees of freedom. The distribution functions for the longitudinal momentum fraction of di-quark could be same as that for quarks.